<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./音乐.css">
</head>

<body>
    <section id="wrap">
        <h2 class="title">百度音乐榜单</h2>
        <ul id="list">
            <li>
                <input type="checkbox" checked="false" />
                <span>第一条信息</span>
                <a href="javascript:;" class="collect">收藏</a>
                <a href="javascript:;" class="cancelCollect">取消收藏</a>
                <a href="javascript:;" class="remove">删除</a>
            </li>
        </ul>
        <footer class="footer">
            <label><input type="checkbox" id="checkAll" />全选/全不选</label>
            <a href="javascript:;" id="remove">删除</a>
            <input type="text" id="newInfo" />
            <a href="javascript:;" id="add">添加</a>
        </footer>
    </section>
    <script>
        var data = [
            {
                id: 0,
                title: "残酷月光 - 费启鸣",
                checked: true,
                collect: true
            }, {
                id: 1,
                title: "兄弟 - 艾热",
                checked: true,
                collect: false
            }, {
                id: 2,
                title: "毕生 - 夏增祥",
                checked: false,
                collect: true
            }, {
                id: 3,
                title: "yjbjn - 李春花",
                checked: false,
                collect: false
            }, {
                id: 4,
                title: "战场 - 沙漠五子",
                checked: true,
                collect: false //是否收藏 true 收藏 false 没有收藏
            }
        ];

        function renderDom(data) {
            let listEle = document.querySelector("#list");
            listEle.innerHTML = "";
            data.forEach((item, key) => {
                let liEle = document.createElement("li");
                liEle.innerHTML = `
                    <input type="checkbox" ${item.checked ? 'checked' : ''} />
                    <span>${item.title}</span>
                    ${item.collect ? '<a href="javascript:;" class="cancelCollect">取消收藏</a>' : '<a href="javascript:;" class="collect">收藏</a>'}
                    <a href="javascript:;" class="remove">删除</a>
                `;


                //实现收藏和取消收藏
                liEle.onclick = function (e) {
                    console.log(e.target);
                    if (e.target.classList.contains("collect")) {
                        data[key].collect = true;
                        renderDom(data);
                    }
                    if (e.target.classList.contains("cancelCollect")) {
                        data[key].collect = false;
                        renderDom(data);
                    }
                    if (e.target.classList.contains("remove")) {
                        data.splice(key, 1);
                        renderDom(data);
                    }

                    //点击checkbox事件
                    if (e.target.nodeName === "INPUT") {
                        data[key].checked = e.target.checked
                        console.log(data);
                        document.querySelector("#checkAll").checked = isCheckAll(data);
                    }
                }
                listEle.appendChild(liEle);
            })
        }
        renderDom(data);

        document.querySelector("#checkAll").onclick = function () {
            data.forEach(item => {
                console.log(this.checked);
                item.checked = this.checked;
            })
            renderDom(data);
        }
        document.querySelector("#remove").onclick = function() {
            var res = data.filter(item => !item.chekcked);
            renderDom(res);
        }

        let inputEle = document.querySelector("#newInfo");
        document.querySelector("#add").onclick = function () {
            let title = inputEle.value;
            let obj = {
                id: data.length,
                title,
                checked: false,
                collect: false
            }
            data.push(obj);
            inputEle.value = "";
            renderDom(data);
        }



    </script>
</body>

</html>